Ethernet Modules EI 812F

Features 

… IEEE802.3 Ethernet standard 

… Provides 10Base5 compliant communication via AUI 

… 32-bit data bus 

… Transmission rate 10 MBit/s 

… Direct memory access to main memory, < 4% CPU overhead for operation 

… Optional battery for redundant battery backup of main memory

Description 

These communication modules provide Ethernet communications to the system bus compliant with IEEE802.3 standard. 

Communications module, to connect a commercial transceiver with AUI connector (15-pin female plug DIN 41652).

LED Displays 

State 

Off No supply voltage, module is isolated 

Green Power supply on, module identified and 

ready to operate as configured. 

Orange Power supply on, module identified and either: 

 — normal transitory state after module startup 

 — configuration mode of Boot Loader Orange flashing Power supply on, module identified; module not connected to proper bus structure. Red Power supply on and either: 

 — module not yet identified (normal for short time during module startup) 

 — error occurred during module test Battery (PM803F) Off AC 800F is active, EI 812F not active 

=>buffering from power supply module 

AC 800F is off (no watchdog of the batteries voltage) =>buffering from battery. 

Orange During battery recovery or start-up phase

Red Warning: battery low, no battery inserted, insufficient electrical contact etc. 

 Green battery inserted and data protection provided. 

Battery (PM802F) 

 Off Sufficient buffer battery voltage 

 Orange Buffer battery not found or low (insufficient voltage). 

Front Panel Connections 

15-pin SUB-D socket with slide lock for AUI interface 

Technical Data 

Rated voltage 3.3 V / 5 V, ±3%, from CPU board 

Power consumption max. 4.9 W (2.3 W + PIN Transceiver) 

Full Ethernet 10Base5 via AUI/10Base5 transceiver and AUI connection 

Fiber optic cable 10BaseFL via AUI/FO transceiver and 

AUI connection 

Transceiver feeding 

Rated voltage 12 V, ± 5% 

Current requirement typ. 250 mA 

RAM and real-time-clock buffering time 

 PM 803F PM 802F 

New battery inserted ≥ 10 days ≥ 1,5 years 

After “Low” warning ≥ 5 hours ≥ 10 days 

Battery 3.6 V lithium battery, 950 mAh (not in the delivery) 

Weight approx. 0.150 kg (without battery)